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EP 2 567 522 A1

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(43) Date of publication: 13.03.2013 Bulletin 2013/11 (21) Application number: 11720650.8 (22) Date of filing: 03.05.2011

(51) International Patent Classification (IPC):  H04L 27/26(2006.01) H04B 17/00(2006.01) H04L 27/38(2006.01) (86) International application number: PCT/US2011/034939 (87) International publication number: WO 2011/140046 (10.11.2011 Gazette 2011/45)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 02.05.2011 US 98954 10.03.2011 US 45386 03.05.2010 US 330612 P (71) Applicant: Telefonaktiebolaget LM Ericsson (publ) 164 83 Stockholm (SE)	(72) Inventors: PARK, Chester San Jose, CA 95134 (US) SUNDSTRÖM, Lars S-247 91 Södra Sandby (SE) SVENSSON, Jim S-224 74 Lund (SE) (74) Representative: HOFFMANN EITLE  Patent- und Rechtsanwälte Arabellastrasse 4 81925 München 81925 München (DE)